Method for testing filled and closed cans.



' 'PATBNTED JUNE 18, 1907.

4 B. s. BNO. METHOD FOR TESTING FILLED AND GLOSED CANS.

APPLIOATION FILED JUNE 7.1906.

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CLOW T UNITED STATES PATENT OFFICE.

EDWARD S. ENO, ELGIN, ILLINOIS.

METHOD FOR TESTING FILLEDAND CLOSED CANS..

Specification of Letters Patent.

Patented June 18, 1907;

Application filed June 7, 1906. Serial K0. 320,639.

To all zohom it may concern:

Be it known that I, EDWARD S. ENo, a citizen of the Umted States, residing at El in, in

the county of Kane and State of Illinois,

have invented certain new and useful Improvements in Methods for Testing Filled and Closed Cans, ofwhich the following is a specification.

The object of this invention is to subject tin cans after they have been filled and closed to the action of 'a partial vacuum whereby the external pressure is partially removed from around the can, which will permit some of the liquid contents to oozeout' through an opening that may be revealed by this met d.

In the accompanying drawings, Figure 1 is a vertical section of an apparatus 'for carrymg .out my method. Fig. 2 is a horizontal section of the same. Fig. 3 is a perspective view of a can showing the result of my method.

and the ends 4 placed a ainst theends of the receptacle. The air is then partly exhausted from Within the receptacle. Should any of the cans leak, the air within the leaky cans will esca e from the eans'carrying some of the li ui contents with it. Air is again per mitte to fill the receptacle when the ends can be removed allowing the cans within the receptacle to be taken out and re laced byothers. The cans taken out of t e receptacle are inspected, and if the liquid contents has oozed out it will show where the leak is.

I am aware that cans have been subjected to air ressure in order that air may enter any lea lcy cans and bulge them, the pressure is then removed which will leave the cans in their bulged condition, but, my invention differs from this method by treating filled cans and detecting any leaky ones by the liquid contents showing on the outside of the cans.

I claim as In mvention.

The metho herein described of testing closedand filled cans containing liquids, which consists in placing the cans in a receptacle, closing the receptacle hermetically, then exhausting the air from the receptacle to a certian degree and finally allowing the receptacle to fil with air. j i

- EDWARD s; ENO.

Witnesses:

WM. R.-TowNsEND, HERBERT S. ENo. 

